钢中残余CrNi含量常在0.30%及下,采用化学分析并不经济,采用看谱分析时对于这样低的Ni尚有一定困难,若专门选取摄谱分析条件也不太适宜,我们利用在中型摄谱仪上,以交流电弧作光源摄谱分析其它元素时,附代摄入如下线粗(表1,表2),以谱线强度进行比较求其含量。表1,表2内介绍的线组给工作带来很大方便, The residual CrNi content of steel is often 0.30% and below, the use of chemical analysis is not economical, the use of read spectrum analysis for such a low Ni is still somewhat difficult, if the special selection of spectral analysis conditions are not appropriate, we use the medium Spectrograph, the AC arc as the light source spectrum analysis of other elements, the appendix ingested the following crude line (Table 1, Table 2), compared with the spectral line intensity to find its content. Table 1, Table 2 to introduce the line group to bring great convenience,